Wire-drawing drum



(1 10 Model.)

W. W. SHBARER. WIRE DRAWING DRUM.

Patented Sept. 23, 1890.

.[72W'67ZZ07 mfi'zesses UNITED STATES PATENT OFFICE.

WILLIAM WATTS SHEARER, OF PORT ANGELES, WVASHINGTON.

WIRE-DRAWING DRUM.

SPECIFICATION forming part of Letters Patent No. 437,135, datedSeptember 23,, 1890. i

Application filed July 9, 1889. Serial No. 317,251. (No model.)

To all whom it. may concern.-

Be it known that I, WILLIAM WATTS SHEAR- ER, of Port Angeles, county ofOlallam, State of Washington, have invented certain new and usefulImprovements in Wire Drawing Drums; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

My invention relates to wire drawing drums, so called, the object beingto do away with the draw-bar and pinehers now in use by the substitutionof a chain-sheave, chain, and automatic pinehers, the chain-sheave beingattached to the shaft or spider on the inside of the drum and revolvingwith it in such a manner as to draw the wire from the die to the drum bya continuous motion and also to hold the wire during the entire drawingprocess, thus doing away with all present devices for holding the wire.

A further object is to avoid the waste now occasioned by the frequentapplication of the pinehers now in use in drawing the wire from the die.

By the present method the wire is taken from the die by means ofpinehers attached to a draw-bar operated by means of an eccentric. Fromtwo to three motions of the drawbar and as many applications of thepinchers are required in order to draw enough wire to wrap around thedrum and attach to the vise.

By means of my invention the wire is seized at the die by the automaticpinehers attached to a chain or wire rope, which is secured to thesheave within the drum. Power being applied, the chain-sheave revolvesindependently of the drum and draws the chain and pinehers holding thewire entirely Within the drum through an opening in the side thereof.The drum is then set in motion by the long arm of the spider coming incontact with a lug on its inner circumference, thus drawing the wirefrom the die and attaching it to the drum with one continuous motion.

In the accompanying drawings, Figure 1 is a plan view of thechain-sheave attached to spider, chain, and pinehers drawing wire fromthe die as applied to the wire-drawing drum invented by W. W. Shearerand patented December 7, 1886, by Letters Patent No. 353,975. Fig. 2 isa vertical section through drum and spider, showing the working partsunder the drum, attachment of chain-sheave to spider, and pinehers inposition for taking Wire from the die, the pinehers in both drawingsbeing shown at double the scale of the other parts, in order to moreplainly exhibit the mechanism of their construction. Fig. 3 shows theknuckle-joint for closing pinehers, with chain attached. Fig. 4 is aplan view of the drum and spider, showing the lug cast on inside ofdrum, by means of which the drum is set in motion when the chain andpinehers are drawn wholly within the same. Fig. 5 is a side or edge viewof the annular drum, showing the portion of its periphery provided withthe notch or open slot through which the pinehers draw the end of thewire prior to the drum being set in revolution.

The letterA indicates the sheave or grooved wheel on which thewire-drawing chain 13 is wound. Said sheave is keyed fast on the sameshaft a that carries the spider G. The arms of pinehers D (shownenlarged) are connected by toggle-links p p, and the chain B is attachedto the knuckle or hinge joint E of the latter, as shown in Figs. 1 and2. The

wire w being gripped by the pinehers D is drawn with them through itsperipheral not ch N, Fig. 5. The tractive force required for thisoperation is applied by the chain B, which winds on sheave A when thelatter is rotated along with the shaft a. The rotation. of the latteralso carries with it the spider G, whose longest arm 6 then comes incontact or engagement with a lug L, Fig. 4, formed on the inside of therim of the wire-drum. The shaft a, sheave B, spider G, and the drumcontinuing to rotate together, the wire is drawn through the die andwound 011 the drum, as will be readily understood.

What I claim is- 1. The combination, with the wire-drawing drum having anotch in its periphery, of the chain-sheave A, contained within saiddrum and rotating independently thereof, and the chain attached to thesheave and pinehers, as shown and described.

2. The combination, with the wire-drawing drum having its rim providedwith a notch and lug, as specified, 0f the chain-sheave A In testimonywhereof I sign this specificaand spider G, both eontaineciwithin thedrum tion, in the presence of two witnesses, this and rotating togetherindependently of the 13th day of April, 1889.

latter, the spider having an arm which en- WILLIAM WATTS SIIEARER. gagessaid lug, and the pinehers and chain at- Witnesses:

tacked to the sheave, all as shown and de- HARRY A. COVENTON,

scribed. WM. H. SMYTHE.

